The fun thing about moose is that, depending on the species, a bull moose can weigh as much as the car you are driving when you hit it. Factor in their height, and that basically means that you are knocking its legs out from under it and sending its entire mass into the windshield. This usually results in the immediate death of anyone in the front seat.
And god help you if your seat belt is unbuckled at the time of impact, as hitting a 3 quarter ton wall of flesh at 60 mph tends to give you an immediate and final lesson in how inertia works.
Moose. Serious business.